My first giant scale (and first gasser) was the kangke monocoupe. It a beautiful plane, builds easily, and it reasonable priced at tower. Throw a G26 in her, and you have yourself a great plane at a fraction of the cost of most other giant planes out there- its very stable and predictable yet can do some aerobatics.
If you want bigger and 3d capable, I second the recommendation of getting a wild hare. I have the extra special with a DA50 and its a great plane. You are definately going to drop several hundred more on this choice.
Other options would be the Kangke Waco and the rearwin speedster. Both are great choices too and much more aerobatic than the monocoupe, but would require something in the 40-50cc range for power. Kangke has specials on these two planes. The ARF and a Brisson 2.4 for $799.

I have owned (or currently own) each of these planes mentioned and they are all great. Depends on how much you want to spend. THe nice thing about the three kangke planes mentioned is that you can get away with using cheaper servos, or even standard servos. The wild hare (or something like it) definately requires high end servos.